Porter water mods

[stuknkrvl]

Brewing a porter tomorrow, trying to decide on water mods.

OG 1.062, ~38 IBU, 34 SRM, 5 gallon batch.

I'm still learning how to use Bru'n Water, start with 100% RO. I was considering the London water profile versus the "black balanced" or "black bitter" profiles.

Thoughts?

 

[gspot]

https://www.homebrewtalk.com/showthread.php?t=198460

Assuming 100% RO, I'd add 1 tsp. CaCl per 5 gal, as this thread suggests, and that's it.